Question about 2002 Ford F150 Regular Cab

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Anti theft malfunction

On a 2002 ford f150 there is a plastic one wire sensor around the ignition swith and next to that a two wire sensor that looks like a small pellet, what is the function of these sensors and how do they work +/-

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Heres the skinny....the wire around the ignition switch is actually an antennea for your anti theft transponder system. the other two wires work in conjuction with the anti theft system in that it supplies power to the ignition switch itself when your key is inserted into the ignition. Inside your key is a chip which emits a certain frequency known only to your vehicle.....when this key is near the ignition switch (ie going to start the car) the antenna senses the frequency and the anti theft system powers down and powers up the ignition so you can start your vehicle. Thanks for using fixya! Any more questions shoot me a email!

Sincerely,

JC

Posted on Dec 11, 2008

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